A Theoretical Extension of the Technology Acceptance Model: Four Longitudinal Field Studies

Management Science - Tập 46 Số 2 - Trang 186-204 - 2000
Viswanath Venkatesh1, Fred D. Davis2
1Robert H. Smith School of Business, Van Munching Hall, University of Maryland, College Park, Maryland 20742
2Sam M. Walton College of Business Administration, University of Arkansas, Fayetteville, Arkansas 72701

Tóm tắt

The present research develops and tests a theoretical extension of the Technology Acceptance Model (TAM) that explains perceived usefulness and usage intentions in terms of social influence and cognitive instrumental processes. The extended model, referred to as TAM2, was tested using longitudinal data collected regarding four different systems at four organizations (N = 156), two involving voluntary usage and two involving mandatory usage. Model constructs were measured at three points in time at each organization: preimplementation, one month postimplementation, and three months postimplementation. The extended model was strongly supported for all four organizations at all three points of measurement, accounting for 40%–60% of the variance in usefulness perceptions and 34%–52% of the variance in usage intentions. Both social influence processes (subjective norm, voluntariness, and image) and cognitive instrumental processes (job relevance, output quality, result demonstrability, and perceived ease of use) significantly influenced user acceptance. These findings advance theory and contribute to the foundation for future research aimed at improving our understanding of user adoption behavior.

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Management Science

Tập 46 Số 2

186-204

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